WB4 Color Map Adjustment

This page will list the steps required to adjust the color mapping properties for scan head 1 using CyScan. Scan head 1 should already be aligned prior to starting this procedure. Scan heads 2 & 3 will be corrected in procedures that are linked to this document. You should always contact Cyberware Support before performing any calibration to ensure you have the proper tools and an understanding of the procedures.

Procedure

1. Center the subject on the pedestal, facing cameras 0 & 1. The subject should be shirtless and should be holding a white piece of paper over his body at about the mid-chest level.
2. Ensure that the scanner's lights are turned on.
3. Verify that the following settings are still in the Scan Setup window:

Texture:	RGB
Width:	2000mm
Pitch:	4.0mm

4. In the main CyScan window, click the Scan button.

Scan

5. Turn OFF the scan head view buttons for cameras 0, 2 and 3.

Scanhead View Buttons

6. Select the Shaded Textured Surface button in the CyScan window.

Shaded Textured Surface Button

IMPORTANT:
It is important that you use only the sliders that are discussed in this procedure. Modification of the remaining sliders is not necessary, and may make the color alignment process extremely difficult.

7. Locate the Texture Control Panel for tr1.

Texture Control: tr1

8. Adjust the vertical (Y) mapping:

Adjust the sliders listed below in order to get the best mapping of the color texture along the vertical (up/down) axis. After each movement of a slider, use the Process button to see if your changes are acceptable. Use very small changes until you are comfortable with the adjustment procedure.

Texture Controls (Head 1)

1. The Move M slider controls the up and down movement of all three (3) color channels; Red (R), Green (G) and Blue (B).
2. The Move M Red, Move M Green, and Move M Blue sliders control the color convergence. The values of these sliders may or may not be equal, depending upon your particular scanner. These values, typically, do not need modification.
3. Press the Process button to reapply the texture map to the polygonal data with the new parameters.
4. Repeat this step until the color map is in alignment with the polygonal data in the vertical direction.
9. Adjust the horizontal (X) mapping:

Just like the sliders above, use the Process button to verify that you're moving the texture in the correct direction and receiving appropriate results. Also, use very small changes until you are comfortable with the adjustment procedure.

Texture Controls (Head 1)

1. Move the Move N to a higher or lower number to adjust the color mapping along the X axis.
2. Press the Process button to reapply the texture map to the polygonal data with the new parameters.
3. Repeat this step until the color map is in alignment with the polygonal data in the horizontal direction.
10. Adjust the X-axis "stretch":

Very little, if any, adjustment should be needed with this parameter. Be very careful when adjusting this value, as very small changes in the value can cause extreme changes in the way that the color maps to the object.

Texture Controls (Head 1)

1. Move the Scale N to a higher or lower number to adjust the color mapping along the X axis.
2. Press the Process button to reapply the texture map to the polygonal data with the new parameters.
3. Repeat this step until the color map is in alignment with the polygonal data in the horizontal direction.
11. Sometimes, further refinement of the variables is required. Repeat the steps in this procedure as many times as necessary to correctly map the color onto the range data.
12. Open the "WB-6###-factory.txt" configuration file (in the ...\Cyberware\CyScanÏg\ directory) using any text editor.
13. Copy all of the variables from the Texture Controls window into the configuration file using this template as a guide:

texresample tr1 set transm	=	Move M
texresample tr1 set transmred	=	Move M Red
texresample tr1 set transmgrn	=	Move M Green
texresample tr1 set transmblu	=	Move M Blue
texresample tr1 set scalen	=	Scale N
texresample tr1 set transn	=	Move N

14. Save the configuration file.
15. Close the configuration file.
16. Quit CyScan.
17. Launch CyScan (this will read in the new color mapping parameters).
18. Take a scan with the following settings:

Texture:	RGB
Width:	2000mm
Pitch:	4.0mm

19. Select Shaded Textured Surface from the CyScan window and verify the new settings.
20. Continue to align the color for scan head 2.